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Finding the Fourth Proportional to 3,611.53, 5,417.30 and 875.53

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Solution

The fourth proportional to 3,611.53, 5,417.30 and 875.53 is: 1,313.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.53 : 5,417.30 = 875.53 : x
  2. Step 2: Convert to fraction form
    3,611.53/5,417.30 = 875.53/x
  3. Step 3: Cross multiply
    3,611.53x = 5,417.30 × 875.53
  4. Step 4: Simplify right side
    3,611.53x = 4,743,008.67
  5. Step 5: Solve for x
    x = 4,743,008.67/3,611.53
  6. Step 6: Final answer
    x = 1,313.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.